最近在部署apollo配置中心，发现下载下来的jar包的启动脚本里是这样的
./$SERVICE_NAME".jar" start
比较好奇就像解压开jar包试试，结果报错格式不正确，用文本编辑器打开jar文件，发现前边有一段脚本。
网上搜索了一下原来是把shell脚本加载了jar的开头：
其他参考文章：https://segmentfault.com/a/1190000013489340
参考脚本：
#!/bin/bash
# chkconfig: 2345 85 85
# description: spring boot theory
# processname: spring-boot-theory
# Created By: manerfan (manerfan.china@gmail.com)
JAR="/usr/local/spring-boot-theory.jar"
PIDFILE=/data/sms-service/smss.pid
java=java
if test -n "$JAVA_HOME"; then
java="$JAVA_HOME/bin/java"
fi
start() {}
stop() {}
restart() {}
status() {}
case "$action" in
start)
start "$@"; exit $?;;
stop)
stop "$@"; exit $?;;
restart)
restart "$@"; exit $?;;
status)
status "$@"; exit $?;;
*)
echo "Usage: $0 {start|stop|force-stop|restart|force-reload|status|run}"; exit 1;
esac
exit 0
apollo中的启动脚本：
#!/bin/bash
#
# . ____ _ __ _ _
# /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
# ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
# \\/ ___)| |_)| | | | | || (_| | ) ) ) )
# ' |____| .__|_| |_|_| |_\__, | / / / /
# =========|_|==============|___/=/_/_/_/
# :: Spring Boot Startup Script ::
#
### BEGIN INIT INFO
# Provides: apollo-adminservice
# Required-Start: $remote_fs $syslog $network
# Required-Stop: $remote_fs $syslog $network
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Apollo AdminService
# Description: Ctrip Configuration Center
# chkconfig: 2345 99 01
### END INIT INFO
[[ -n "$DEBUG" ]] && set -x
# Initialize variables that cannot be provided by a .conf file
WORKING_DIR="$(pwd)"
# shellcheck disable=SC2153
[[ -n "$JARFILE" ]] && jarfile="$JARFILE"
[[ -n "$APP_NAME" ]] && identity="$APP_NAME"
# Follow symlinks to find the real jar and detect init.d script
cd "$(dirname "$0")" || exit 1
[[ -z "$jarfile" ]] && jarfile=$(pwd)/$(basename "$0")
while [[ -L "$jarfile" ]]; do
[[ "$jarfile" =~ init\.d ]] && init_script=$(basename "$jarfile")
jarfile=$(readlink "$jarfile")
cd "$(dirname "$jarfile")" || exit 1
jarfile=$(pwd)/$(basename "$jarfile")
done
jarfolder="$(dirname "$jarfile")"
cd "$WORKING_DIR" || exit 1
# Source any config file
configfile="$(basename "${jarfile%.*}.conf")"
# shellcheck source=/dev/null
[[ -r "${jarfolder}/${configfile}" ]] && source "${jarfolder}/${configfile}"
# Initialize PID/LOG locations if they weren't provided by the config file
[[ -z "$PID_FOLDER" ]] && PID_FOLDER="/var/run"
[[ -z "$LOG_FOLDER" ]] && LOG_FOLDER="/var/log"
! [[ -x "$PID_FOLDER" ]] && PID_FOLDER="/tmp"
! [[ -x "$LOG_FOLDER" ]] && LOG_FOLDER="/tmp"
# Set up defaults
[[ -z "$MODE" ]] && MODE="auto" # modes are "auto", "service" or "run"
[[ -z "$USE_START_STOP_DAEMON" ]] && USE_START_STOP_DAEMON="true"
# Create an identity for log/pid files
if [[ -z "$identity" ]]; then
if [[ -n "$init_script" ]]; then
identity="${init_script}"
else
identity=$(basename "${jarfile%.*}")_${jarfolder//\//}
fi
fi
# Initialize log file name if not provided by the config file
[[ -z "$LOG_FILENAME" ]] && LOG_FILENAME="${identity}.log"
# ANSI Colors
echoRed() { echo $'\e[0;31m'"$1"$'\e[0m'; }
echoGreen() { echo $'\e[0;32m'"$1"$'\e[0m'; }
echoYellow() { echo $'\e[0;33m'"$1"$'\e[0m'; }
# Utility functions
checkPermissions() {
touch "$pid_file" &> /dev/null || { echoRed "Operation not permitted (cannot access pid file)"; return 4; }
touch "$log_file" &> /dev/null || { echoRed "Operation not permitted (cannot access log file)"; return 4; }
}
isRunning() {
ps -p "$1" &> /dev/null
}
await_file() {
end=$(date +%s)
let "end+=10"
while [[ ! -s "$1" ]]
do
now=$(date +%s)
if [[ $now -ge $end ]]; then
break
fi
sleep 1
done
}
# Determine the script mode
action="run"
if [[ "$MODE" == "auto" && -n "$init_script" ]] || [[ "$MODE" == "service" ]]; then
action="$1"
shift
fi
# Build the pid and log filenames
if [[ "$identity" == "$init_script" ]] || [[ "$identity" == "$APP_NAME" ]]; then
PID_FOLDER="$PID_FOLDER/${identity}"
fi
pid_file="$PID_FOLDER/${identity}.pid"
log_file="$LOG_FOLDER/$LOG_FILENAME"
# Determine the user to run as if we are root
# shellcheck disable=SC2012
[[ $(id -u) == "0" ]] && run_user=$(ls -ld "$jarfile" | awk '{print $3}')
# Find Java
if [[ -n "$JAVA_HOME" ]] && [[ -x "$JAVA_HOME/bin/java" ]]; then
javaexe="$JAVA_HOME/bin/java"
elif type -p java > /dev/null 2>&1; then
javaexe=$(type -p java)
elif [[ -x "/usr/bin/java" ]]; then
javaexe="/usr/bin/java"
else
echo "Unable to find Java"
exit 1
fi
# Build actual command to execute
command="$javaexe -Dsun.misc.URLClassPath.disableJarChecking=true $JAVA_OPTS -jar $jarfile $RUN_ARGS $*"
# Action functions
start() {
if [[ -f "$pid_file" ]]; then
pid=$(cat "$pid_file")
isRunning "$pid" && { echoYellow "Already running [$pid]"; return 0; }
fi
do_start "$@"
}
do_start() {
working_dir=$(dirname "$jarfile")
pushd "$working_dir" > /dev/null
if [[ -n "$run_user" ]]; then
mkdir "$PID_FOLDER" &> /dev/null
checkPermissions || return $?
chown "$run_user" "$PID_FOLDER"
chown "$run_user" "$pid_file"
chown "$run_user" "$log_file"
if [ $USE_START_STOP_DAEMON = true ] && type start-stop-daemon > /dev/null 2>&1; then
arguments=(-Dsun.misc.URLClassPath.disableJarChecking=true $JAVA_OPTS -jar $jarfile $RUN_ARGS "$@")
start-stop-daemon --start --quiet \
--chuid "$run_user" \
--name "$identity" \
--make-pidfile --pidfile "$pid_file" \
--background --no-close \
--startas "$javaexe" \
--chdir "$working_dir" \
-- "${arguments[@]}" \
>> "$log_file" 2>&1
await_file "$pid_file"
else
su -s /bin/sh -c "$command >> \"$log_file\" 2>&1 & echo \$!" "$run_user" > "$pid_file"
fi
pid=$(cat "$pid_file")
else
checkPermissions || return $?
$command >> "$log_file" 2>&1 &
pid=$!
disown $pid
echo "$pid" > "$pid_file"
fi
[[ -z $pid ]] && { echoRed "Failed to start"; return 1; }
echoGreen "Started [$pid]"
}
stop() {
[[ -f $pid_file ]] || { echoYellow "Not running (pidfile not found)"; return 0; }
pid=$(cat "$pid_file")
isRunning "$pid" || { echoYellow "Not running (process ${pid}). Removing stale pid file."; rm -f "$pid_file"; return 0; }
do_stop "$pid" "$pid_file"
}
do_stop() {
kill "$1" &> /dev/null || { echoRed "Unable to kill process $1"; return 1; }
for i in $(seq 1 60); do
isRunning "$1" || { echoGreen "Stopped [$1]"; rm -f "$2"; return 0; }
[[ $i -eq 30 ]] && kill "$1" &> /dev/null
sleep 1
done
echoRed "Unable to kill process $1";
return 1;
}
restart() {
stop && start
}
force_reload() {
[[ -f $pid_file ]] || { echoRed "Not running (pidfile not found)"; return 7; }
pid=$(cat "$pid_file")
rm -f "$pid_file"
isRunning "$pid" || { echoRed "Not running (process ${pid} not found)"; return 7; }
do_stop "$pid" "$pid_file"
do_start
}
status() {
[[ -f "$pid_file" ]] || { echoRed "Not running"; return 3; }
pid=$(cat "$pid_file")
isRunning "$pid" || { echoRed "Not running (process ${pid} not found)"; return 1; }
echoGreen "Running [$pid]"
return 0
}
run() {
pushd "$(dirname "$jarfile")" > /dev/null
$command
result=$?
popd > /dev/null
return "$result"
}
# Call the appropriate action function
case "$action" in
start)
start "$@"; exit $?;;
stop)
stop "$@"; exit $?;;
restart)
restart "$@"; exit $?;;
force-reload)
force_reload "$@"; exit $?;;
status)
status "$@"; exit $?;;
run)
run "$@"; exit $?;;
*)
echo "Usage: $0 {start|stop|restart|force-reload|status|run}"; exit 1;
esac
exit 0
网友评论